Wasserman Plot Interpretation Flashcards
What is VO₂?
The volume of oxygen consumed per minute, indicating aerobic metabolism efficiency.
VO₂ is a critical measure in exercise physiology.
What does VO₂ max represent?
The maximum amount of oxygen an individual can utilize during intense exercise, representing aerobic capacity.
VO₂ max is often used as an indicator of cardiovascular fitness.
Define VO₂ kinetics.
The rate at which oxygen uptake responds to changes in exercise intensity, with faster kinetics in trained individuals.
Faster VO₂ kinetics are associated with better aerobic performance.
What does the VO₂ efficiency slope indicate?
The ratio of VO₂ to work rate; lower values suggest cardiovascular impairment.
This metric helps in evaluating an individual’s cardiovascular health.
What is Oxygen Pulse?
The amount of oxygen consumed per heartbeat, reflecting stroke volume and cardiac efficiency.
Oxygen Pulse can provide insights into cardiac function during physical activity.
What does VCO₂ stand for?
Carbon Dioxide Production
What is VCO₂ used to assess?
Metabolic and ventilatory efficiency
What does RER stand for?
Respiratory Exchange Ratio
What does a RER of ≥1.1 indicate?
Maximal effort
What does PETCO₂ represent?
End-Tidal CO₂ Pressure
What does PETCO₂ indicate?
Ventilation-perfusion matching
What is the First Ventilatory Threshold (VT1) also known as?
Gas Exchange Threshold
What occurs at the First Ventilatory Threshold (VT1)?
VE/VO₂ increases without a rise in VE/VCO₂
What does the Second Ventilatory Threshold (VT2) indicate?
A shift to metabolic acidosis
What is the Anaerobic Threshold?
The exercise intensity at which lactate accumulation begins
What does VE stand for?
Minute Ventilation
What does the VE/VCO₂ Slope indicate?
Ventilatory efficiency
What happens to VE/VO₂ Ratio at VT1?
It increases
What is Ventilatory Limitation?
A condition where ventilation becomes the limiting factor to exercise
What is Work Rate measured in?
Watts, W
What does Exercise Tolerance refer to?
The maximum exercise intensity an individual can sustain
What is a Cardiac Limitation?
Impaired oxygen uptake due to reduced cardiac output
What condition is an example of Pulmonary Limitation?
COPD or pulmonary hypertension
What is Metabolic Acidosis?
Excess acid buildup leading to compensatory hyperventilation
